<!DOCTYPE html>
<html lang="en" style="font-size: 7.5px;">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./js/common.js"></script>
    <style>
        .a{
            font-size: 0.4rem;
            border: 1px solid black;
        }
    </style>
</head>
<body>
    <span style="font-size: 30px;">asdasdasdas</span>
    <span style="font-size: 0.4rem;">asdasdasdas</span>
    <span class="a">asdasdasdas</span>
    <p style="font-size: 5.3rem;"></p>
    <div style="max-width: 10rem;"></div>
</body>
</html>